Discharging system for microcrystalline glass production and production system

Abstract

The invention belongs to the technical field of high-lithium ultra-thin glass ceramic production, and particularly relates to a discharging system and a production system for glass ceramic production, the discharging system is used for conveying glass melt in a platinum channel to a forming device, the discharging system comprises a buffer cylinder, a plurality of first discharging openings are formed in the buffer cylinder from top to bottom, a feeding opening is formed in the buffer cylinder, and a plurality of second discharging openings are formed in the feeding opening; the feeding hole is used for being communicated with a platinum channel; the butt joint pipe is communicated with the first discharge hole; and the discharging mechanism is provided with a material receiving opening and a second discharging opening, the material receiving opening communicates with the butt joint pipe, and the height of the second discharging opening is not larger than that of the platinum channel. According to the discharging system disclosed by the invention, glass melts with different sizes and properties can obtain the same flow velocity at the material nozzle, so that the same widening and thinning conditions can be provided for the forming device as much as possible, the ultrathin, high-quality and wide-plate production of high-lithium glass ceramics can be realized, and a calender in the forming device can be prevented from being redesigned and manufactured as much as possible.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-lithium ultra-thin microcrystalline glass production, and in particular relates to a discharging system and a production system for microcrystalline glass production. Background Art

[0002] At present, the glass produced by the calendering method usually uses two pairs of calenders in the molding device to widen the glass melt through multiple calendering. The first pair of calenders widens the glass melt for the first time, and then the second pair of calenders widens it for the second time. Since the design dimensions of the calender, especially the wall thickness and length of the calender roller, need to be calculated based on data such as the glass formula and the viscosity-temperature curve, in actual production, the design dimensions of the calender cannot accurately match the production conditions due to different working conditions, so that the wall thickness and length of the calender roller need to be repeatedly designed and re-manufactured, resulting in significant production losses. Furthermore, due to process adjustments, when the production material changes, the calender needs to be redesigned and manufactured again to match the glass melt characteristics of different material squares, which seriously affects the production plan. Summary of the invention

[0003] The applicant has found that the viscosity of glass melts from different recipes is different, resulting in large differences in flow rate, making it difficult to provide the same widening and thinning conditions for the calendering rollers. In order to ensure that the calendering rollers can achieve normal production without replacement, it is necessary to ensure that glass melts from different recipes reach the same flow rate at the discharge point. Based on this, the present invention is proposed.

[0004] The object of the present invention is to provide a discharging system and a production system for producing microcrystalline glass. The discharging system can adjust the height of the first discharging port of the buffer cylinder connected to the discharging mechanism according to the glass melt characteristics of different materials, so that the glass melts of different materials can obtain the same flow rate at the material nozzle, which is beneficial to provide the same widening and thinning conditions for the molding device as much as possible, and is beneficial to the production of ultra-thin, high-quality, wide plates of high-lithium microcrystalline glass, and try to avoid redesigning and manufacturing the calender in the molding device again.

[0005] In order to achieve the above-mentioned object, in a first aspect, the present invention provides a discharging system for producing microcrystalline glass, which is used to transport the glass melt in the platinum channel to a molding device, comprising:

[0006] A buffer cylinder, which is provided with a plurality of first discharge ports from top to bottom and a feed port on the top thereof, the feed port being used to communicate with the platinum channel;

[0007] A butt joint pipe, which is connected with the first discharge port;

[0008] The material discharging mechanism is provided with a material receiving port and a second material discharging port, the material receiving port is connected with the docking pipe, and the height of the second material discharging port is not higher than the height of the platinum channel.

[0009] In some preferred embodiments, the height of the second discharge port is not lower than the height of the receiving port.

[0010] In some preferred embodiments, the discharging mechanism comprises:

[0011] A lifting pipe, which has a discharge end and the material receiving port, the height of the discharge end is higher than the height of the material receiving port, and the material receiving port is connected with the butt pipe;

[0012] The nozzle has a first end and a second discharge port, wherein the first end is connected to the discharge end of the lifting tube, and the second discharge port is connected to the forming device.

[0013] More preferably, the width of the first end of the nozzle is smaller than the width of the second outlet thereof.

[0014] More preferably, the discharge cross-sectional area of ​​the second discharge port of the nozzle is more than 1.2 times the pipe cross-sectional area of ​​the riser, and further preferably 1.2-2 times.

[0015] More preferably, the lifting pipe is extended and inclined from its discharge end to its receiving port, and the inclination angle α of the lifting pipe satisfies 0<α≤90°, preferably 30°≤α≤90°, and further preferably 45°≤α≤75°.

[0016] More preferably, the material nozzle includes a tail bin and a mouth bin, the first end of the tail bin is connected to the discharge end of the lifting pipe, the second end of the tail bin is connected to the mouth bin, and the width of the tail bin gradually increases along the discharge direction.

[0017] Further preferably, the thickness of the nozzle bin gradually decreases along the discharging direction.

[0018] Further preferably, the width of the nozzle bin gradually increases along the discharging direction, or the width of the nozzle bin gradually increases along the discharging direction and then remains stable.

[0019] More preferably, the nozzle further comprises a plurality of reinforcing ribs, which are arranged in the second discharge port of the nozzle bin and are spaced apart along the width direction of the nozzle bin, and the side surfaces thereof are further preferably arc-shaped, and more preferably teardrop-shaped.

[0020] In some preferred embodiments, the discharging mechanism further comprises a material receiving pipe, which is horizontally arranged and one end of which is connected to the butt joint pipe, and the second end of which is connected to the material receiving port of the lifting pipe.

[0021] In some preferred embodiments, a first flow control unit is provided on the butt joint.

[0022] In some preferred embodiments, the discharge system further includes a feed pipe, which connects the feed port with the platinum channel.

[0023] More preferably, a second flow control unit is provided on the feed pipe.

[0024] In some preferred embodiments, the discharging system further comprises a discharging pipe, one end of which is connected to the lower part of the buffer cylinder and a third flow control unit is arranged on the discharging pipe. More preferably, the diameter of the discharging pipe gradually decreases along the discharging direction.

[0025] In some specific preferred embodiments, the structure of the first flow control unit, the second flow control unit or the third flow control unit includes:

[0026] Turntable;

[0027] A screw, the upper end of which is connected to the rotating disk, the lower end of which passes through the wall of a corresponding pipeline on which a corresponding flow control unit is installed and extends into the corresponding pipeline, and the screw is threadedly connected to the wall of the corresponding pipeline through which it passes;

[0028] The rotating blade is arranged in the corresponding pipeline of the corresponding flow control unit, and its upper part is connected to the lower end of the screw rod, so as to adjust the flow inside the corresponding pipeline when the screw rod rotates.

[0029] Further preferably, the screw is sequentially arranged along the axial direction into a first connecting section, a second connecting section and a third connecting section, the surface of the second connecting section is provided with threads for the threaded connection, and the surfaces of the first connecting section and the third connecting section are smoothly arranged.

[0030] In a second aspect, the present invention provides a high-lithium ultra-thin microcrystalline glass production system, comprising a platinum channel, the discharge system and the molding device described in the first aspect.

[0031] In the present invention, the discharge mechanism can be connected to a butt joint with a suitable height according to the material properties of the glass melt, and the height of the butt joint allows the glass melt to be transported to the molding device at a preset equal flow rate; the glass melt is transported to the buffer cylinder through the platinum channel, and then transported to the molding device through the butt joint and the discharge mechanism.

[0032] The invention is suitable for the production of microcrystalline glass with a lithium content of more than 10wt%.

[0033] The present invention can produce microcrystalline glass with a thickness of 0.33-1.5 mm.

[0034] Beneficial effects:

[0035] In the present invention, after the glass melt flows out of the platinum channel, it enters the buffer cylinder. The buffer cylinder has first discharge ports of different heights. The discharge mechanism docks with at least one of the first discharge ports of different heights arranged from top to bottom. The glass melt enters the molding device after passing through the buffer cylinder and the discharge mechanism. When docking with the first discharge ports of different heights of the buffer cylinder, the nozzle of the discharge mechanism close to the molding device will obtain different discharge pressures. The higher the docking height, the greater the discharge pressure and the lower the discharge difficulty. Based on this, for glass melts of different material properties, by adjusting the docking height, glass melts of different material properties can obtain the same flow rate at the nozzle, which is beneficial to provide the molding device with the same widening and thinning conditions as much as possible, and is beneficial to the production of ultra-thin, high-quality, and wide plates of high-lithium microcrystalline glass. The present invention can realize the production of glass melts of different material properties, and try to avoid redesigning and manufacturing the calender in the molding device.

[0036] Furthermore, the inventors of the present invention have also found that there is a second technical problem in the prior art: in order to increase the width of the glass plate in production, it is usually achieved by increasing the flow rate of the molten glass per unit time and auxiliary widening equipment (such as a side drawing machine). However, the more molten glass there is, the greater the load of the molding device, the more difficult it is to control the temperature of the molten glass, the more unstable the quality, and the more difficult it is to mold it into an ultra-thin glass plate. This directly leads to the current mass production of high-lithium microcrystalline ultra-thin glass plates, which can only produce narrower (≤1000mm) glass plate width products. Therefore, the current production width of the original plate of high-lithium ultra-thin microcrystalline electronic glass is greatly limited, which seriously affects the production output. And this technical problem makes it more difficult to increase the flow rate and its temperature control in the production of glass melts of different material properties.

[0037] In this regard, in the preferred solution of the present invention, a solution that can further solve the above-mentioned second technical problem is also provided, which is provided with a lifting tube with a height difference at both ends and a nozzle of a specific structure. On the one hand, it can be more conducive to promoting the glass melt in the platinum channel to approach a full tube state, thereby avoiding the possibility of air bubbles and impurities; otherwise, when air contacts the glass melt, air bubbles and impurities may be easily generated and drawn into the glass melt, resulting in glass defects; on the other hand, the width of the first end of the nozzle is smaller than the width of the second discharge port, and it has a one-time rolling function, which can achieve one-time widening and thinning without increasing the flow rate of the glass melt per unit time and the auxiliary widening equipment, and at the same time can reduce the glass melt load per unit area of ​​the subsequent molding device, reduce the difficulty of controlling the temperature of the glass melt in the molding device, ensure the glass quality, and be more conducive to the production of wider ultra-thin glass plates; and save one rolling in the molding device. The present invention can achieve mass production of glass plates with a width of 180-2300mm and a thickness of 0.33mm-1.5mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 It is a three-dimensional structural schematic diagram of a specific implementation mode of the discharging system of the present invention.

[0040] Figure 2 yes Figure 1 main view.

[0041] Figure 3 yes Figure 2 Top view of the .

[0042] Figure 4 yes Figure 2 Right view of .

[0043] Description of Reference Numerals

[0044] 100-discharging system, A-discharging mechanism; 1-material receiving pipe; 2-lifting pipe, 201-material receiving port, 202-discharging end; B-nozzle, 3-tail bin, 301-first end; 4-nozzle bin, 401-second discharging port; 5-reinforcing rib; 6-second flow control unit, 601-turntable, 602-screw, 603-rotating blade, 604-sealing refractory ring; 7-first flow control unit, 8-butt pipe, 9-buffer cylinder, 901-first discharging port, 902-feeding port, 10-discharging pipe, 11-connecting flange, 12-feeding pipe, 13-third flow control unit. DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] The endpoints and any values ​​of the ranges disclosed in this article are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article. Among them, the terms "optional" and "optional" all mean that they can be included or not (or can be included or not).

[0050] The applicant has found that the glass melts of different materials have different viscosities, resulting in large differences in flow rates. In order to ensure normal production without replacing the calendering rollers, it is necessary to ensure that the glass melts of different materials reach the same flow rate at the discharge nozzle.

[0051] The present invention provides a discharging system for producing microcrystalline glass, which is used for conveying molten glass in a platinum channel to a molding device. The discharging system can adjust the height of a first discharging port of a buffer cylinder connected to a discharging mechanism according to the characteristics of the molten glass of different materials, so that the molten glass of different materials can obtain the same flow rate at the material nozzle, which is beneficial to providing the molding device with the same widening and thinning conditions as much as possible, and is beneficial to the production of ultra-thin, high-quality, wide plates of high-lithium microcrystalline glass, and avoiding the need to redesign and manufacture the calender in the molding device as much as possible.

[0052] See also Figure 1The discharging system 100 for producing microcrystalline glass of the present invention includes a buffer cylinder 9, a docking tube 8 and a discharging mechanism A. The flow path of the molten glass flows from the platinum channel into the buffer cylinder 9, passes through the docking tube 8 and reaches the discharging mechanism A, and is finally transported to the molding device. Specifically, a feed port 902 is provided on the buffer cylinder 9, and the feed port 902 is used to communicate with the platinum channel to receive the molten glass. A plurality of first discharging ports 901 are provided on the buffer cylinder 9, and each of the plurality of first discharging ports 901 has a height difference. One end of the docking tube 8 is connected to the buffer cylinder 9 through the first discharging port 901, and the discharging mechanism A is provided with a receiving port and a second discharging port 401, and the other end of the docking tube 8 is connected to the receiving port, so as to realize the transportation of the molten glass from the buffer cylinder 9 to the second discharging port 401 of the discharging mechanism A. The height of the second discharge port 401 is set to be no higher than the height of the platinum channel. It should be pointed out that the height of the second discharge port 401 of the present invention is no higher than the height of the platinum channel, which means that the height of the axis of the second discharge port 401 is no higher than the height of the axis of the receiving port of the platinum channel. The receiving port of the platinum channel refers to the docking place where the glass melt from the previous process section (such as a kiln or a clarification tank or a homogenization tank, etc.) is received. With such a setting, according to the principle of communicating vessels, the glass melt will always fill the second discharge port 401 under the action of pressure, realizing the discharge of the first discharge port 901 at different heights, and then by adjusting the docking height of the first discharge port 901, glass melts of different material properties can obtain the same flow rate at the second discharge port 401.

[0053] In the above-mentioned discharge system 100 for producing microcrystalline glass, the buffer cylinder 9 is provided with first discharge ports 901 of different heights. When docking with the buffer cylinder 9 at different heights, the second discharge port 401 will obtain discharge pressures of different sizes. The higher the docking height, the greater the discharge pressure and the lower the discharge difficulty. By adjusting the docking height, the flow rate of the glass melts of different material properties from the docking tube 8 can be adjusted, so that they are output from the second discharge port 401 at the same flow rate and sent to the molding device, providing the molding device with the same widening and thinning conditions, being able to adapt to different glass material directions, and ensuring that the molding device can achieve normal production without replacement. It can be understood that the flow rate here refers to the flow rate when the docking tube 8 is output. It should be further understood that in the present invention, after the discharge is stable, the flow rates of the docking tube 8, the discharge mechanism A and the molding device are consistent.

[0054] Specifically, the buffer cylinder 9 plays a buffering role, reduces the flow rate of the glass melt from the platinum channel, and reduces the impact erosion of the high-speed glass melt on the discharge mechanism A, thereby improving the uniformity of the discharge amount of the discharge mechanism A, avoiding glass plate defects, ensuring the quality of the glass plate, reducing production losses, and increasing production output; the butt joints 8 at different heights on the buffer cylinder 9 can achieve feeding at different heights, thereby achieving the effect of adapting to the flow of glass melts with different material properties at the same flow rate. After the glass melt enters the buffer cylinder 9, it flows into the butt joint 8 at a certain height, and then flows into the molding device through the butt joint 8 and the discharge mechanism A.

[0055] In one embodiment, the first discharge ports 901 on the buffer cylinder 9 of the present invention can be regularly distributed in the height direction, for example, only one first discharge port 901 is set at the same height, and one first discharge port 901 is set at different heights along the same vertical direction, or multiple first discharge ports 901 are set at intervals in the circumferential direction at the same height, and multiple first discharge ports 901 are set at intervals in the circumferential direction at different heights; the first discharge ports 901 on the buffer cylinder 9 can also be irregularly distributed in the height direction of the buffer cylinder 9, as long as the glass melts of different material properties can be ensured to flow out at the same flow rate by feeding at an appropriate height. The feed port 902 of the buffer cylinder 9 can be opened on the wall or bottom of the buffer cylinder 9, preferably opened on the wall of the buffer cylinder 9 and the height of the feed port 902 is not higher than the height of the first discharge port 901.

[0056] In one embodiment, the number of the docking pipes 8 in the present invention can be multiple or single. When it is multiple, the number corresponds to and is connected with a plurality of first discharge ports 901. When discharge is required, the discharge mechanism A can be docked with the corresponding docking pipes 8 required; when it is single, it is connected with one of the first discharge ports 901, and the other first discharge ports 901 are sealable structures (i.e., structures that can be closed or opened). When other first discharge ports 901 are required to discharge, the docking pipe 8 can be disassembled and assembled to the first discharge port 901 to be discharged. Preferably, the buffer cylinder 9 and the docking pipes 8 of different heights arranged thereon are connected by welding, and the glass melt flows to the docking pipe 8 in the buffer cylinder 9. Further, in one embodiment, the buffer cylinder 9 can be provided with three first discharge ports 901, and the three discharge ports are arranged at intervals along the same vertical direction. There are three matching docking pipes 8, which are respectively connected with the first discharge ports 901 to achieve the adjustment of three feeding heights of the glass melt. The number of discharge ports and docking pipes 8 can be adaptively adjusted according to production needs.

[0057] In one embodiment, the first discharge port 901 on the buffer cylinder 9 of the present invention can be connected to one or more discharge mechanisms A at the same time to realize single-tube or multi-tube feeding multi-line production, and the specific number can be determined according to production requirements. It should be noted that the first discharge ports 901 of different heights correspond to glass products with different production requirements. During multi-line production, the discharge mechanism A and the forming device are matched with multiple sets of settings to meet the multi-line production of glass products with different production requirements and improve production efficiency.

[0058] In one embodiment, those skilled in the art can select the material and thickness of the buffer tube 9 and the butt joint tube 8 according to actual needs. The material is preferably platinum, platinum-rhodium alloy or other metals, and the thickness is preferably greater than 1 mm.

[0059] In some preferred embodiments, the height of the second discharge port 401 is not lower than the height of the receiving port 201. When the height of the second discharge port 401 is higher than the height of the receiving port 201, it is more conducive to promoting the glass melt in the platinum channel to approach a full tube state, thereby avoiding the possibility of air bubbles and impurities.

[0060] See also Figure 1 and Figure 2 In some more preferred embodiments, the discharge mechanism A includes a lifting tube 2 and a nozzle B. Here, the glass melt flows from the butt joint 8 into the lifting tube 2, and then into the nozzle B until it is transported to the molding device. The lifting tube 2 has a discharge end 202 and a receiving port, and the receiving port is connected to the butt joint 8. The height of the discharge end 202 of the lifting tube 2 is set to be higher than the height of the receiving port, which can be more conducive to the glass melt in the lifting tube 2 approaching a full tube state, thereby avoiding the possibility of air bubbles and impurities; otherwise, when air contacts the glass melt, air bubbles and impurities are easily generated and drawn into the glass melt, resulting in the possibility of glass defects. The nozzle B has a first end 301 and a second discharge port 401, the first end 301 is connected to the discharge end 202 of the lifting tube 2, and the second discharge port 401 is connected to the molding device. It is used to allow the glass melt to flow in from the butt joint 8 through the receiving port, and then flow into the discharge end 202 and be transported to the nozzle B, and then flow through the first end 301 and the second discharge port 401 to enter the molding device. The second discharge port 401 of the nozzle B of the present invention can be set to a shape that matches the required product width of the calender in the molding device.

[0061] In one embodiment, the width of the first end 301 of the nozzle B is smaller than the width of the second outlet 401 thereof, so that one-time thinning (or pressing) and widening can be achieved at the nozzle B, without the need for two-time thinning (or pressing) and widening in the molding device, and only one calendering is required in the molding device.

[0062] In one embodiment, the discharge cross-sectional area of ​​the second discharge port 401 of the nozzle B is more than 1.2 times the pipe cross-sectional area of ​​the riser 2, and more preferably 1.2-2 times. Under this preferred embodiment, the discharge cross-sectional area of ​​the second discharge port 401 of the nozzle B is appropriate, which can not only avoid the glass melt from being blocked in the discharge mechanism A due to viscosity, but also facilitate the second discharge port 401 of the nozzle B to be filled with glass melt, thereby avoiding the possibility of defects such as crystallization. Under the same conditions, affected by the viscosity of the glass melt, if the discharge cross-sectional area of ​​the second discharge port 401 of the nozzle B (i.e., the cross-sectional area at the discharge position of the nozzle B) is too small and less than 1.2 times, it will cause the glass melt to be blocked in the discharge mechanism A, and if it is too large, it will cause the second discharge port 401 of the nozzle B to be unable to be filled with glass melt and generate temperature difference, further causing defects such as crystallization.

[0063] Moreover, the discharge cross-sectional area of ​​the second discharge port 401 of the nozzle B is more than 1.2 times the pipe cross-sectional area of ​​the lifting tube 2. According to the principle of communicating vessels, the glass melt can always fill the discharge position in the nozzle B (i.e., the nozzle B port), which is more conducive to the continuous pulling of the glass melt under the pulling force of the molding device, thereby achieving one-time thinning (or pressing) and widening at the nozzle B, and then achieving secondary thinning (or pressing) and widening in the molding device, without the need for two rolling in the molding device.

[0064] In one embodiment, the lifting tube 2 extends from its discharge end 202 to its receiving port and is inclined. Further preferably, the inclination angle α of the lifting tube 2 satisfies 0<α≤90°, preferably 30°≤α≤90°, and further preferably 45°≤α≤75°. In the preferred embodiment of the present invention, the lifting tube 2 is 0°<α≤90°, and the glass liquid of the lifting tube 2 flows into the nozzle B at this angle, and finally lifts so that the liquid level height at the discharge position in the nozzle B is set higher than the liquid level height in the lifting tube 2, which can ensure that the glass melt in the lifting tube 2 is in a full tube state and avoid the possibility of air bubbles and impurities; otherwise, when air contacts the glass melt, air bubbles and impurities may be easily generated and drawn into the glass melt to cause glass defects. Those skilled in the art can determine α according to the liquid level difference between the liquid level height at the discharge position in the nozzle B and the liquid level height in the lifting tube 2. The larger the difference, the greater the hydraulic pressure, and the lifting tube 2 is easier to reach a full state at a small angle.

[0065] In one embodiment, the effect of the present invention can be achieved as long as the inclined setting of the riser 2 satisfies the above range of the inclination angle α on one side of the riser 2. It can be understood that the inclination angle α is the acute angle between the axis of the riser 2 and the horizontal line.

[0066] In one embodiment, the material of the riser 2 can be selected from metals such as platinum, platinum-rhodium alloy, etc.

[0067] See also Figure 2 and Figure 3 In some preferred embodiments, the nozzle B includes a tail bin 3 and a mouth bin 4, the first end 301 of the tail bin 3 is connected to the discharge end 202 of the riser 2, and the second end of the tail bin 3 is connected to the mouth bin 4. It can be understood that the mouth bin 4 has a second discharge port 401. The glass melt flows into the tail bin 3 from the discharge end 202 of the riser 2, and is then transported to the molding device through the mouth bin 4. The nozzle B is configured as the tail bin 3 and the mouth bin 4, so that the mouth bin 4 can be adaptively set to different shapes according to the thickness, width and other shapes required by the molding device for rolling, and is used to directly roll the glass melt into an intermediate sample of a certain width and thickness, saving processes for the subsequent molding device, and the tail bin 3 is used to gradually transition the glass melt from the riser 2 to an intermediate sample of a certain width and thickness.

[0068] In one embodiment, the width of the tail bin 3 gradually increases along the discharge direction. It is possible to achieve one-time thinning (or pressing) and widening at the tail bin 3, and then achieve two-time thinning (or pressing) and widening in the forming device, without the need for two calenderings in the forming device.

[0069] In one embodiment, the material of the nozzle B can be selected from metals such as platinum, platinum-rhodium alloy, etc. The tail bin 3 is a hollow structure, and the glass melt diffuses in the width direction in the tail bin 3. The maximum width of the tail bin 3 directly determines the primary width of the glass sheet. Those skilled in the art can select the maximum width of the tail bin 3 according to actual needs. The maximum width position of the tail bin 3 is the connection between the tail bin 3 and the nozzle bin 4.

[0070] In some specific preferred embodiments, the thickness of the tail bin 3 extends along the discharge direction in a stable and unchanging trend.

[0071] In some specific preferred embodiments, the thickness of the nozzle bin 4 gradually decreases along the discharging direction. In this preferred embodiment, the nozzle bin 4 is a trapezoidal columnar structure, which is more conducive to the glass melt to completely fill the nozzle B during the flow process before discharging, and prevents the possibility of dead material.

[0072] In one embodiment, the mouth chamber 4 is a wide and flat mouth.

[0073] In one embodiment, the thickness of the tail bin 3 and the mouth bin 4 gradually increases along the discharging direction, which is more conducive to reducing heat loss.

[0074] In one embodiment, the width of the nozzle bin 4 gradually increases along the discharge direction (i.e., the overall width shows an increasing pattern), or the width of the nozzle bin 4 first gradually increases along the discharge direction and then stabilizes (i.e., the overall width first partially increases and then stabilizes).

[0075] See also Figure 1 and Figure 4 The nozzle B of the present invention further comprises a plurality of reinforcing ribs 5, which are arranged in the second discharge port 401 of the nozzle bin 4 and are arranged at intervals along the width direction of the nozzle bin 4. The reinforcing ribs 5 of the present invention can support and fix the nozzle B, and prevent the nozzle B from being easily deformed under the long-term forming pulling force and high temperature, thereby preventing the possibility of uneven discharge of the glass melt.

[0076] In one embodiment, the side surface of the reinforcing rib 5 is arc-shaped, more preferably teardrop-shaped, which is more conducive to effectively reducing the obstruction of the glass melt and preventing the possibility of uneven temperature caused by uneven flow rate.

[0077] In one embodiment, the material of the reinforcing rib 5 can be selected from metals such as platinum, platinum-rhodium alloy, etc.

[0078] See Figure 1 The discharging mechanism A further comprises a receiving pipe 1, which is horizontally arranged and one end of which is connected to the butt-joint pipe 8, and the second end of which is connected to the receiving port of the lifting pipe 2. In this preferred embodiment, the receiving pipe 1 of the discharging mechanism A is a horizontal pipe, which is convenient for horizontally receiving the high-temperature glass melt transported from the front end.

[0079] In one embodiment, the material of the receiving pipe 1 can be selected from metals such as platinum, platinum-rhodium alloy, etc.

[0080] In some other embodiments, the material receiving pipe 1 may not be provided in the discharge mechanism A, but the docking pipe 8 is directly connected to the material receiving port of the lifting pipe 2.

[0081] In some preferred embodiments, a first flow control unit 7 is disposed on the butt joint pipe 8 to adjust the flow rate of the glass melt at the butt joint pipe 8 and to turn it on and off.

[0082] See also Figure 1 and Figure 2 The discharge system 100 further includes a feed pipe 12, which connects the feed port 902 with the platinum channel. It should be understood that the feed pipe 12 can be a part of the platinum channel, or a separately provided part of the discharge system 100 of the present invention, or an independent pipe, and those skilled in the art can select according to actual needs.

[0083] In some other specific embodiments, the platinum channel can extend to the feed port 902 .

[0084] In one embodiment, those skilled in the art can select the material and thickness of the feed pipe 12 according to actual needs. The feed pipe 12 is a through pipe, and the material is preferably selected from metals such as platinum, platinum-rhodium alloy, and the thickness is preferably greater than 1 mm.

[0085] In one embodiment, one end of the feed pipe 12 is connected to the platinum channel, preferably using a flange (preferably a water-cooled or air-cooled flange), the flange material is preferably nickel, copper, platinum or other metals, and a nickel flange is more preferably used; the other end of the feed pipe 12 is connected to the feed port 902 of the buffer cylinder 9, and is preferably fixed to the feed port 902 of the buffer cylinder 9 by welding.

[0086] In one embodiment, the feed pipe 12 is provided with a second flow control unit 6 for adjusting the flow rate and opening and closing of the glass melt at the feed pipe 12. Under this preferred solution, the glass melt flow can be cut off in an emergency and the glass melt flow rate can be controlled.

[0087] See also Figure 1 The discharging system 100 further includes a discharge pipe 10, one end of which is connected to the lower part of the buffer cylinder 9. Under this preferred solution, it is convenient to discharge the glass melt through the discharge pipe 10 when quality abnormalities or pipeline switching occur. Those skilled in the art can select the material and thickness of the discharge pipe 10 according to actual needs. The material is preferably selected from metals such as platinum and platinum-rhodium alloy, and the thickness is preferably greater than 1 mm.

[0088] See also Figure 1 The discharge pipe 10 is provided with a third flow control unit 13 for adjusting the flow of the glass melt at the discharge pipe 10 and opening and closing the discharge pipe 10 .

[0089] In the above-mentioned scheme of setting up the third flow control unit 13, when it is necessary to switch the docking pipes 8 at different heights, open the third flow control unit 13 of the discharge pipe 10 for discharging, close the first flow control unit 7 of the original docking pipe 8, and after switching to the new docking pipe 8, open the first flow control unit 7 corresponding to the pipe, and close the first flow control unit 7 of the discharge pipe 10 to realize the operation of switching the docking pipes 8 at different heights.

[0090] In one embodiment, the diameter of the discharge pipe 10 gradually decreases along the discharge direction. Under this preferred solution, it is beneficial to avoid the mixing of air while smoothly discharging the molten glass, thereby ensuring the quality of the molten glass entering the buffer cylinder 9 later.

[0091] In the present invention, it can be understood that the first flow control unit 7, the second flow control unit 6 or the third flow control unit 13 are respectively used to control the switch or flow of the corresponding pipeline, and can be an automatically controlled gate or valve, or a manually controlled gate or valve (such as a gate).

[0092] In one embodiment, the first flow control unit 7, the second flow control unit 6 or the third flow control unit 13 has a rotary structure. The structure of the first flow control unit 7 and the third flow control unit 13 of the present invention can be the same as that of the second flow control unit 6 or different.

[0093] See also Figure 1 The structure of the second flow control unit 6 includes a turntable 601, a screw 602 and a vane 603, which is used to control the rotation of the screw 602 through the turntable 601, and drive the vane 603 to rotate in the corresponding pipeline to control the flow of the glass melt. The upper end of the screw 602 is connected to the turntable 601, and the lower end of the screw 602 passes through the pipe wall of the corresponding pipeline installed with the corresponding flow control unit and extends into the corresponding pipeline, and the screw 602 is threadedly connected to the pipe wall of the corresponding pipeline through which it passes. The vane 603 is arranged in the corresponding pipeline of the corresponding flow control unit, and the upper part of the vane 603 is connected to the lower end of the screw 602 (preferably welded), and can adjust the internal flow of the corresponding pipeline when the screw 602 rotates. It can be understood that the gap between the vane 603 and the inner wall of the corresponding pipeline is the glass melt flow channel.

[0094] In the above preferred structure, it can be understood that the diameter of the vane 603 is smaller than the diameter of the corresponding pipe of the corresponding flow control unit, such as 1-2 mm smaller; the corresponding pipe of the corresponding flow control unit is provided with a threaded hole for the screw 602 to pass through; part of the screw 602 (at the threaded hole position on the corresponding pipe) is provided with threads, and part is not provided with threads. The turntable 601 can be rotated manually or electrically to drive the screw 602 and the vane 603 to rotate, thereby realizing the function of controlling the flow inside the corresponding pipe.

[0095] In one embodiment, the rotor blade 603 is in a disc shape or other shapes.

[0096] In one embodiment, those skilled in the art can select the material of the screw 602, the rotating disk 601, and the rotating blade 603 according to actual needs, for example, preferably select metals such as platinum, platinum-rhodium alloy, etc.

[0097] In one embodiment, the screw 602 is sequentially arranged along the axial direction into a first connection section, a second connection section and a third connection section, the surface of the second connection section is provided with threads for the threaded connection, and the surfaces of the first connection section and the third connection section are arranged to be smooth. It can be understood that the second connection section of the screw 602 is threadedly connected to the wall of the corresponding pipe. The surfaces of the first connection section and the third connection section of the screw 602 are arranged to be smooth, which is conducive to preventing the glass melt from generating dead material at the thread position to affect the quality of the glass melt.

[0098] See also Figure 1 A sealing refractory ring 604 is provided on the threaded connection portion where the screw 602 and the corresponding pipe are connected. Under this preferred solution, the glass melt can be prevented from leaking through the thread gap.

[0099] In one embodiment, the interior of the sealing refractory ring 604 of the present invention is preferably filled with refractory wool or refractory bricks.

[0100] See also Figure 1 A connecting flange 11 is provided on the platinum channel and / or the butt pipe 8 to facilitate quick disassembly and assembly.

[0101] In one embodiment, the material of the connecting flange 11 is preferably nickel, copper, platinum or other metals, and a nickel flange is more preferably used, which is mainly used for quick disassembly and assembly. The connecting flange 11 is provided on the butt pipe 8, which can facilitate quick disassembly and assembly with the discharging mechanism A. Preferably, the feeding pipe 12 is provided with a connecting flange 11 for detachable connection with the platinum channel.

[0102] The discharging system 100 of the present invention can enhance the adaptability and adjustability of production equipment under different working conditions, reduce production losses, and increase production output. At the same time, it can stably and effectively expand the production board width, greatly improve output efficiency and output, and bring good economic benefits.

[0103] The present invention also provides a high-lithium ultra-thin microcrystalline glass production system, including a platinum channel, the aforementioned discharge system 100 and a molding device.

[0104] In the present invention, the discharge mechanism A can be connected to a butt joint 8 with a suitable height according to the material properties of the glass melt, and the height of the butt joint 8 allows the glass melt to be transported to the molding device at a preset equal flow rate; the glass melt is transported to the buffer cylinder 9 through the platinum channel, and then transported to the molding device through the butt joint 8 and the discharge mechanism A.

[0105] The invention is suitable for the production of microcrystalline glass with a lithium content of more than 10wt%.

[0106] The present invention can produce microcrystalline glass with a thickness of 0.33-1.5 mm.

[0107] The discharging system 100 of the present invention can be applied to the production of glass melts with different material properties, while avoiding the possibility of glass defects, and is conducive to the production of ultra-thin, high-quality, and wide plates of high-lithium microcrystalline glass, and avoids the need to redesign and manufacture the calender in the molding device. It can also enhance the adaptability and adjustability of production equipment under different working conditions, reduce production losses, and increase production output. At the same time, it can stably and effectively expand the production plate width, greatly improve the output efficiency and output, and bring good economic benefits.

[0108] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A discharging system for producing microcrystalline glass, which is used to transport the glass melt in the platinum channel to the forming device, characterized in that: include: A buffer cylinder, which is provided with a plurality of first discharge ports from top to bottom and a feed port on the top thereof, the feed port being used to communicate with the platinum channel; A butt joint pipe, which is connected with the first discharge port; The material discharging mechanism is provided with a material receiving port and a second material discharging port, wherein the material receiving port is connected with the butt joint pipe, and the height of the second material discharging port is not higher than the height of the platinum channel.

2. The discharging system according to claim 1, characterized in that: The height of the second discharge port is not lower than the height of the receiving port.

3. The discharging system according to claim 1, characterized in that: The discharging mechanism comprises: A lifting pipe, which has a discharge end and the material receiving port, the height of the discharge end is higher than the height of the material receiving port, and the material receiving port is connected with the butt pipe; The nozzle has a first end and a second discharge port, wherein the first end is connected to the discharge end of the lifting tube, and the second discharge port is connected to the forming device.

4. The discharging system according to claim 3, characterized in that: The width of the first end of the nozzle is smaller than the width of the second outlet.

5. The discharging system according to claim 3, characterized in that: The discharge cross-sectional area of ​​the second discharge port of the nozzle is more than 1.2 times the pipe cross-sectional area of ​​the riser, preferably 1.2-2 times.

6. The discharging system according to claim 3, characterized in that: The lifting pipe is extended and inclined from its discharge end to its receiving port, and the inclination angle α of the lifting pipe satisfies 0<α≤90°, preferably 30°≤α≤90°, and further preferably 45°≤α≤75°.

7. The discharging system according to claim 3, characterized in that: The material nozzle includes a tail bin and a mouth bin, the first end of the tail bin is connected to the discharge end of the lifting pipe, the second end of the tail bin is connected to the mouth bin, and the width of the tail bin gradually increases along the discharge direction; preferably, the thickness of the mouth bin gradually decreases along the discharge direction.

8. The discharging system according to claim 7, characterized in that: The width of the nozzle bin gradually increases along the discharging direction, or the width of the nozzle bin gradually increases along the discharging direction and then remains stable.

9. The discharging system according to claim 7, characterized in that: The nozzle further comprises a plurality of reinforcing ribs, which are arranged in the second discharge port of the nozzle bin and are spaced apart along the width direction of the nozzle bin, and the side surfaces thereof are preferably arc-shaped, and more preferably teardrop-shaped.

10. The discharging system according to claim 3, characterized in that: The discharging mechanism also includes a material receiving pipe, which is horizontally arranged and one end of which is connected to the butt-joint pipe, and the second end of which is connected to the material receiving port of the lifting pipe.

11. The discharging system according to claim 1, characterized in that: The butt joint pipe is provided with a first flow control unit; And / or, the discharging system further comprises a feed pipe, the feed pipe is connected with the feed port and the platinum channel, and a second flow control unit is arranged on the feed pipe; And / or, the discharging system further comprises a discharging pipe, one end of which is connected to the lower part of the buffer cylinder and a third flow control unit is arranged on the discharging pipe; preferably, the diameter of the discharging pipe gradually decreases along the discharging direction.

12. The discharging system according to claim 11, characterized in that: The structure of the first flow control unit, the second flow control unit or the third flow control unit includes: Turntable; A screw, the upper end of which is connected to the rotating disk, the lower end of which passes through the wall of a corresponding pipeline on which a corresponding flow control unit is installed and extends into the corresponding pipeline, and the screw is threadedly connected to the wall of the corresponding pipeline through which it passes; The rotating blade is arranged in the corresponding pipeline of the corresponding flow control unit, and its upper part is connected to the lower end of the screw rod, so as to adjust the flow inside the corresponding pipeline when the screw rod rotates.

13. The discharging system according to claim 12, characterized in that: The screw rod is sequentially arranged along the axial direction into a first connecting section, a second connecting section and a third connecting section, the surface of the second connecting section is provided with threads for the threaded connection, and the surfaces of the first connecting section and the third connecting section are smoothly arranged.

14. A high-lithium ultra-thin glass-ceramics production system, characterized in that: It comprises a platinum channel, a discharging system and a forming device as described in any one of claims 1 to 13.

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